2022-09-29, 11:30 UTC: This issue is now being addressed on Apple's end, and in-app purchases seem to be working well again for most players already. Nevertheless, we will continue to keep an eye on things and update this post again when the issue has been completely resolved. Thank you for your patience!
2022-09-29, 09:00 UTC: We are aware that in-app purchases are not working correctly for players on iOS. This seems to be a global issue that is affecting many other apps as well. We hope this issue will get resolved soon, and will update this post when it does. Thank you for your understanding!